31217775

素因数分解:

$3^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{463}}^1$

素因数の和:536

約数の個数: 48

約数和(自身を含む): 55234560

約数和(自身を除く): 24016785

約数列:

[1, 3, 5, 15, 25, 29, 31, 75, 87, 93, 145, 155, 435, 463, 465, 725, 775, 899, 1389, 2175, 2315, 2325, 2697, 4495, 6945, 11575, 13427, 13485, 14353, 22475, 34725, 40281, 43059, 67135, 67425, 71765, 201405, 215295, 335675, 358825, 416237, 1007025, 1076475, 1248711, 2081185, 6243555, 10405925, 31217775]

約数ペア:

[(1, 31217775), (3, 10405925), (5, 6243555), (15, 2081185), (25, 1248711), (29, 1076475), (31, 1007025), (75, 416237), (87, 358825), (93, 335675), (145, 215295), (155, 201405), (435, 71765), (463, 67425), (465, 67135), (725, 43059), (775, 40281), (899, 34725), (1389, 22475), (2175, 14353), (2315, 13485), (2325, 13427), (2697, 11575), (4495, 6945)]